Re: Calling FreeLibrary in destructor

Well, I am not doing nothing special between WM_CREATE and WM_DESTROY... I
am calling some methods from object... Here is class header code and
corresponding implementation maybe you will find what is wrong...

Here is call stack:
  user32.dll!7e41b393()


  SomeDrawing.exe!_VirtualQuery@12() + 0xf1c bytes C++
  user32.dll!7e440457()

OK, from CallStack my WndProc is problematic...but I couldn't figure out
why/what?

Once again thanks a lot...

// BELOW IS HEADER
#pragma once

#include <windows.h>

// Typedef for pointer to capCreateCaptureWin function

typedef HWND (CALLBACK* CAPCAPWIN) (LPCWSTR, DWORD, int, int, int, int,
HWND, int);

class Webcam
{
public:
Webcam(const LPCWSTR WindowName, HWND ParentWnd, int left, int top,
int width, int height, DWORD style, int webCamId);
~Webcam();
bool Connect();
bool Disconnect();

private:
CAPCAPWIN fpCapCreateCaptureWin;
HMODULE hModDllAviCap;
HWND CaptureWnd;
};

// BELOW IS CPP
#pragma once
#include "stdafx.h"
#include "Webcam.h"

Webcam::Webcam(const LPCWSTR WindowName = L"", HWND ParentWnd = 0, int left
= 0, int top = 0,
  int width = 0, int height = 0, DWORD style = WS_CHILD | WS_VISIBLE, int
webCamId = 0)
{
 hModDllAviCap = NULL;
 hModDllAviCap = LoadLibrary(L"AVICAP32.DLL");

 if (hModDllAviCap)
 { // Here I am getting pointer to function I need "capCreateCaptureWindowW"
  fpCapCreateCaptureWin = (CAPCAPWIN)GetProcAddress(hModDllAviCap,
"capCreateCaptureWindowW");
  if (fpCapCreateCaptureWin)
  {
    CaptureWnd = (*fpCapCreateCaptureWin)(
    WindowName, style, left, top, width, height, ParentWnd, webCamId);
  }
 }
}

Webcam::~Webcam()
{
 CloseWindow(CaptureWnd);
 CaptureWnd = NULL;
 fpCapCreateCaptureWin = NULL;
 FreeLibrary(hModDllAviCap);
 hModDllAviCap = NULL;
}

bool Webcam::Connect()
{
 LRESULT result = SendMessage(CaptureWnd, WM_CAP_DRIVER_CONNECT, 0, 0);
 return (bool)result;
}

bool Webcam::Disconnect()
{
 LRESULT result = SendMessage(CaptureWnd, WM_CAP_DRIVER_DISCONNECT, 0, 0);
 return (bool)result;
}